package com.ruoyi.framework.config;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpMethod;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.ProviderManager;
import org.springframework.security.authentication.dao.DaoAuthenticationProvider;
import org.springframework.security.config.annotation.method.configuration.EnableMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.web.SecurityFilterChain;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
import org.springframework.security.web.authentication.logout.LogoutFilter;
import org.springframework.web.filter.CorsFilter;
import com.ruoyi.framework.config.properties.PermitAllUrlProperties;
import com.ruoyi.framework.security.filter.JwtAuthenticationTokenFilter;
import com.ruoyi.framework.security.handle.AuthenticationEntryPointImpl;
import com.ruoyi.framework.security.handle.LogoutSuccessHandlerImpl;

/**
 * spring security配置
 *
 * @author dayang
 */
@EnableMethodSecurity(prePostEnabled = true, securedEnabled = true)
@Configuration
public class SecurityConfig {

	/**
	 * 自定义用户认证逻辑
	 */
	@Autowired
	private UserDetailsService userDetailsService;

	/**
	 * 认证失败处理类
	 */
	@Autowired
	private AuthenticationEntryPointImpl unauthorizedHandler;

	/**
	 * 退出处理类
	 */
	@Autowired
	private LogoutSuccessHandlerImpl logoutSuccessHandler;

	/**
	 * token认证过滤器
	 */
	@Autowired
	private JwtAuthenticationTokenFilter authenticationTokenFilter;

	/**
	 * 跨域过滤器
	 */
	@Autowired
	private CorsFilter corsFilter;

	/**
	 * 允许匿名访问的地址
	 */
	@Autowired
	private PermitAllUrlProperties permitAllUrl;

	/**
	 * 身份验证实现
	 */
	@Bean
	public AuthenticationManager authenticationManager() {
		DaoAuthenticationProvider daoAuthenticationProvider = new DaoAuthenticationProvider();
		daoAuthenticationProvider.setUserDetailsService(userDetailsService);
		daoAuthenticationProvider.setPasswordEncoder(bCryptPasswordEncoder());
		return new ProviderManager(daoAuthenticationProvider);
	}

	/**
	 * anyRequest | 匹配所有请求路径 access | SpringEl表达式结果为true时可以访问 anonymous | 匿名可以访问 denyAll |
	 * 用户不能访问 fullyAuthenticated | 用户完全认证可以访问（非remember-me下自动登录） hasAnyAuthority |
	 * 如果有参数，参数表示权限，则其中任何一个权限可以访问 hasAnyRole | 如果有参数，参数表示角色，则其中任何一个角色可以访问 hasAuthority |
	 * 如果有参数，参数表示权限，则其权限可以访问 hasIpAddress | 如果有参数，参数表示IP地址，如果用户IP和参数匹配，则可以访问 hasRole |
	 * 如果有参数，参数表示角色，则其角色可以访问 permitAll | 用户可以任意访问 rememberMe | 允许通过remember-me登录的用户访问
	 * authenticated | 用户登录后可访问
	 */
	@Bean
	protected SecurityFilterChain filterChain(HttpSecurity httpSecurity) throws Exception {
		return httpSecurity
			// CSRF禁用，因为不使用session
			.csrf(csrf -> csrf.disable())
			// 禁用HTTP响应标头
			.headers((headersCustomizer) -> {
				headersCustomizer.cacheControl(cache -> cache.disable()).frameOptions(options -> options.sameOrigin());
			})
			// 认证失败处理类
			.exceptionHandling(exception -> exception.authenticationEntryPoint(unauthorizedHandler))
			// 基于token，所以不需要session
			.sessionManagement(session -> session.sessionCreationPolicy(SessionCreationPolicy.STATELESS))
			// 注解标记允许匿名访问的url
			.authorizeHttpRequests((requests) -> {
				permitAllUrl.getUrls().forEach(url -> requests.antMatchers(url).permitAll());
				// 对于登录login 注册register 验证码captchaImage 允许匿名访问
				requests.antMatchers("/login", "/register", "/captchaImage")
					.permitAll()
					// 静态资源，可匿名访问
					.antMatchers(HttpMethod.GET, "/", "/*.html", "/**/*.html", "/**/*.css", "/**/*.js", "/profile/**")
					.permitAll()
					.antMatchers("/swagger-ui.html", "/swagger-resources/**", "/webjars/**", "/*/api-docs", "/druid/**")
					.permitAll()
					// 除上面外的所有请求全部需要鉴权认证
					.anyRequest()
					.authenticated();
			})
			// 添加Logout filter
			.logout(logout -> logout.logoutUrl("/logout").logoutSuccessHandler(logoutSuccessHandler))
			// 添加JWT filter
			.addFilterBefore(authenticationTokenFilter, UsernamePasswordAuthenticationFilter.class)
			// 添加CORS filter
			.addFilterBefore(corsFilter, JwtAuthenticationTokenFilter.class)
			.addFilterBefore(corsFilter, LogoutFilter.class)
			.build();
	}

	/**
	 * 强散列哈希加密实现
	 */
	@Bean
	public BCryptPasswordEncoder bCryptPasswordEncoder() {
		return new BCryptPasswordEncoder();
	}

}
